English
Hujayra madaniyati hayot haqidagi fanlar sohasida keng tarqalgan ilmiy tadqiqot usuli hisoblanadi. hujayra kulturalari laboratoriyada o'rta miqyosdagi hujayra to'qimalari madaniyati uchun mos bo'lgan sarf materiallari. Hujayra madaniyati steril muhitda o'tkazilishi kerak. Hujayra madaniyati paytida har qanday ifloslanishdan qanday qochishimiz mumkin?
Birinchidan, hujayra madaniyatining ifloslanish manbalari asosan uch jihatdan kelib chiqadi. Bir tomondan, kimyoviy ifloslanish hujayralar uchun zaharli yoki tirnash xususiyati beruvchi ba'zi kimyoviy moddalarni anglatadi. Bu ifloslanishlar odatda yuvilmagan idishlar va nopok kimyoviy reagentlardan kelib chiqadi. Va sifatsiz distillangan suv. Ular orasida bakterial endotoksin hujayra o'sishi va eksperimental natijalarga ko'proq ta'sir qiladi. Bu klinik issiqlikning asosiy manbai. Dori-darmonlarni ishlab chiqarish jarayonida klinik dori vositalarida hujayra madaniyati tomonidan ishlab chiqarilgan vaktsinalar va sitokinlarni ishlab chiqarishdan qochish kerak. Toksinlarning ifloslanishi. Kimyoviy ifloslanishni kamaytirish uchun yuqori sifatli distillangan suvdan foydalanish kerak va imkon qadar bir martalik hujayra madaniyati idishlaridan foydalanish kerak.
Boshqa tomondan, biologik ifloslanish, jumladan, bakteriyalar, mog'or va xamirturushlar bilan ifloslanish mavjud. nisbatan oson topish va viruslar, mikoplazma va topish nisbatan qiyin bo'lgan boshqa hujayralar bilan ifloslanish. Ular orasida virus bilan ifloslangan zarralar juda kichik bo'lib, odatda hujayralarda yashirinadi va butun hujayra madaniyati uchun halokatli emas, bu esa tadqiqotchilarga virus ta'sir qilgan hujayra testi natijalarini olish imkonini beradi. Umuman olganda, biologik ifloslanish hujayra madaniyatining ishlashi paytida sodir bo'ladi, shuning uchun yaxshi hujayra madaniyati ish muhiti va ishlash odatlari biologik ifloslanishni kamaytirishning kalitidir.
Boshqa tomondan, ifloslanish asosan noto'g'ri ishlash bilan bog'liq. Misol uchun, ko'plab eksperimentchilar qo'llarini yuvmaydilar va laboratoriyaga faqat spirtli ichimliklarni purkash orqali kiradilar; hujayra madaniyati kvadrat kolba va kultura eritmasini ushlab turganda, tiqilib qolgan qismini ushlab turmang; ultra toza skameykada juda ko'p narsa bor Kutish. Hujayra tajribalari natijalariga ta'sir qilmaslik uchun hujayra madaniyati tajribalarida yuqoridagi jihatlarga e'tibor bering.
The FAI climbed 5.9 percent year-on-year in the first 11 months of 2018, quickening from the 5.7-percent growth in Jan-Oct, the National Bureau of Statistics (NBS) said Friday in an online statement.
The key indicator of investment, dubbed a major growth driver, hit the bottom in August and has since started to rebound steadily.
In the face of emerging economic challenges home and abroad, China has stepped up efforts to stabilize investment, in particular rolling out measures to motivate private investors and channel funds into infrastructure.
Friday's data showed private investment, accounting for more than 60 percent of the total FAI, expanded by a brisk 8.7 percent.
NBS spokesperson Mao Shengyong said funds into weak economic links registered rapid increases as investment in environmental protection and agriculture jumped 42 percent and 12.5 percent respectively, much faster than the average.
In breakdown, investment in high-tech and equipment manufacturing remained vigorous with 16.1-percent and 11.6-percent increases respectively in the first 11 months. Infrastructure investment gained 3.7 percent, staying flat. Investment in property development rose 9.7 percent, also unchanged.